Gas discharge lamp with down conversion luminophore
US6822385B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2002 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Aug 4, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/7773
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A gas discharge lamp fitted with a gas discharge vessel filled with a gas filling is suitable for a gas discharge which emits VUV radiation, with a luminophore coating containing a down conversion luminophore and with means for igniting and maintaining a gas discharge in which the down conversion luminophore has in a host lattice a pair of activators of the a first lanthanoid ion and a second lanthanoid ion and a sensitizer selected from the group of the cerium (III) ion, praseodymium (III) ion, neodymium (III) ion, samarium (III) ion, europium (III) ion, gadolinium (III) ion, terbium (III) ion, dysprosium (III) ion, holmium (III) ion, erbium (III) ion, thulium (III) ion, ytterbium (III) ion and lutetium (III) ion, is environmentally friendly and has a high lamp efficiency &eegr;lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.